Home › CBSE Class 11 (Science) › Physics › Work, Energy and Power › A stone falls freely from 5 m (g = 10). Speed at…
A stone falls freely from 5 m (g = 10). Speed at the ground?
A10 m/s
B50 m/s
C5 m/s
D25 m/s
Answer & Solution
Correct answer: A. 10 m/s
v = sqrt(2gh) = sqrt(2 x 10 x 5) = 10 m/s.
Related questions
Horse-power is still commonly used to describe the output of:The potential energy of a body under a conservative force is always fixed only up to:Power, like work and energy, is what kind of physical quantity?The work-energy theorem holds in which frames of reference?Total mechanical energy of a body stays constant provided the only forces acting on it areAfter which inventor is the SI unit of power named?A motor pulls with a force of 22000 N at a steady 2 m/s. What power does it supply?During an elastic collision, the kinetic energy of the system at each instant of contact i